Function read_byte_array_extending_negative

src/repr/src/row.rs:1304–1306

Read `length` bytes from `data` at `offset`, updating the latter. Extend the resulting buffer to a negative `N`-byte twos complement integer by filling the remaining bits with 1. SAFETY: length <= N offset + length <= data.len()

(data: &mut &[u8], length: usize)

///   * length <= N
///   * offset + length <= data.len()
fn read_byte_array_extending_negative<const N: usize>(data: &mut &[u8], length: usize) -> [u8; N] {
    read_byte_array_sign_extending::<N, 255>(data, length)
}

/// Read `length` bytes from `data` at `offset`, updating the
/// latter. Extend the resulting buffer to a positive or zero `N`-byte